根据句意和中文提示写出单词的正确形式。
小题1:When will you ___________(意识到) the importance of learning a foreign language?
小题2:Do you know we are in the twenty-first ___________(世纪)?
小题3:---Who’s on TV? ---The reporter is having an ______(采访) with the film star.
小题4:I know from my ____________(经验) how dangerous the trip will be.
小题5:Do you think what ___________(导致) the accident that day?